Configuration Serveur cauldron dsn techpack

[breakandplay]

Salut salut
je fais un serveur Dns techpack avec cauldron 1.7.10 mais des que je rajoute par dessus le modpack dns techpack sa me mets des erreurs dans la console.
Donc voici se que j'obtient dans la console quand je lance le serveur quelqu'un peut m'aider ?
p.s. : le serveur est en 1.7.10 sans plugins pour l'instant

Warning: version of bspkrsCore, 6.16 is newer than request 6.15
Warning: version of bspkrsCore, 6.16 is newer than request 6.15
Adding Accesstransformer map: CoFH_at.cfg
A problem occurred running the Server launcher.java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at cpw.mods.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.java:43)
at cpw.mods.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:12)
Caused by: java.lang.NoClassDefFoundError: net/minecraft/world/WorldServer
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2615)
at java.lang.Class.getMethod0(Class.java:2856)
at java.lang.Class.getMethod(Class.java:1668)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
... 6 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.world.WorldServer
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
... 12 more
Caused by: java.lang.IllegalArgumentException
at org.objectweb.asm.ClassVisitor.<init>(Unknown Source)
at org.objectweb.asm.ClassVisitor.<init>(Unknown Source)
at org.objectweb.asm.tree.ClassNode.<init>(Unknown Source)
at cofh.asm.ASMCore.writeWorldServer(ASMCore.java:1180)
at cofh.asm.ASMCore.transform(ASMCore.java:175)
at cofh.asm.CoFHClassTransformer.transform(CoFHClassTransformer.java:38)
at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:276)
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:174)
... 14 more